Numerical analysis of concrete-filled double skin tubular slender columns with internal circular and external hexagonal tubes

ABSTRACTA new kind of double skin CFT has more benefits in construction of bridge and especial buildings due to easily multi beam connections for central columns. In this study 27 double skin specimens filled with concrete, consist of internal circular tube and external hexagonal tubes have been stu...

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Autores principales:	Morteza Naghipour, S. Maedeh Mahdavi, S., Saleh M Ebrahimzadeh
Formato:	article
Lenguaje:	FA
Publicado:	Iranian Society of Structrual Engineering (ISSE) 2021
Materias:	double skin cft hexagonal tube confinement effect ultimate capacity numerical modeling Bridge engineering TG1-470 Building construction TH1-9745
Acceso en línea:	https://doaj.org/article/c9bcaf8bbe5c4a01a1c2ff6857d38b48
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spelling	oai:doaj.org-article:c9bcaf8bbe5c4a01a1c2ff6857d38b482021-11-08T15:54:32ZNumerical analysis of concrete-filled double skin tubular slender columns with internal circular and external hexagonal tubes2476-39772538-261610.22065/jsce.2019.160790.1732https://doaj.org/article/c9bcaf8bbe5c4a01a1c2ff6857d38b482021-04-01T00:00:00Zhttps://www.jsce.ir/article_86852_4fb24c1aad8cc49d88b5c1815d7921b1.pdfhttps://doaj.org/toc/2476-3977https://doaj.org/toc/2538-2616ABSTRACTA new kind of double skin CFT has more benefits in construction of bridge and especial buildings due to easily multi beam connections for central columns. In this study 27 double skin specimens filled with concrete, consist of internal circular tube and external hexagonal tubes have been studied using ABAQUSE finite element software. The effects of some parameters on behavior of CFT consists of: height of column, width to thickness ratio of external steel tube, diameter to thickness of internal tube and eccentricity were considered. Loading was applied as an axially compression in a displacement control state. The results show that whenever the eccentricity is matched through gap of two skins, the concrete confinement does not reduce, which is not the same as some codes of practice recommendations. The increase on strength of column depends on height, eccentricity and width to thickness ratio of external tube. The strength reduction of columns is up to 15% when height increases 50%. When the diameter to thickness, eccentricity and height of specimens remain constant, it was considered through the results that, the effects of width to thickness ratio of models is more significant than other parameters. The results also show that, when the height is constant and the width to thickness of external tube increases some outward foldings on columns were existed.Morteza NaghipourS. Maedeh Mahdavi, S.Saleh M EbrahimzadehIranian Society of Structrual Engineering (ISSE)articledouble skin cfthexagonal tubeconfinement effectultimate capacitynumerical modelingBridge engineeringTG1-470Building constructionTH1-9745FAJournal of Structural and Construction Engineering, Vol 8, Iss 2, Pp 56-69 (2021)
institution	DOAJ
collection	DOAJ
language	FA
topic	double skin cft hexagonal tube confinement effect ultimate capacity numerical modeling Bridge engineering TG1-470 Building construction TH1-9745
spellingShingle	double skin cft hexagonal tube confinement effect ultimate capacity numerical modeling Bridge engineering TG1-470 Building construction TH1-9745 Morteza Naghipour S. Maedeh Mahdavi, S. Saleh M Ebrahimzadeh Numerical analysis of concrete-filled double skin tubular slender columns with internal circular and external hexagonal tubes
description	ABSTRACTA new kind of double skin CFT has more benefits in construction of bridge and especial buildings due to easily multi beam connections for central columns. In this study 27 double skin specimens filled with concrete, consist of internal circular tube and external hexagonal tubes have been studied using ABAQUSE finite element software. The effects of some parameters on behavior of CFT consists of: height of column, width to thickness ratio of external steel tube, diameter to thickness of internal tube and eccentricity were considered. Loading was applied as an axially compression in a displacement control state. The results show that whenever the eccentricity is matched through gap of two skins, the concrete confinement does not reduce, which is not the same as some codes of practice recommendations. The increase on strength of column depends on height, eccentricity and width to thickness ratio of external tube. The strength reduction of columns is up to 15% when height increases 50%. When the diameter to thickness, eccentricity and height of specimens remain constant, it was considered through the results that, the effects of width to thickness ratio of models is more significant than other parameters. The results also show that, when the height is constant and the width to thickness of external tube increases some outward foldings on columns were existed.
format	article
author	Morteza Naghipour S. Maedeh Mahdavi, S. Saleh M Ebrahimzadeh
author_facet	Morteza Naghipour S. Maedeh Mahdavi, S. Saleh M Ebrahimzadeh
author_sort	Morteza Naghipour
title	Numerical analysis of concrete-filled double skin tubular slender columns with internal circular and external hexagonal tubes
title_short	Numerical analysis of concrete-filled double skin tubular slender columns with internal circular and external hexagonal tubes
title_full	Numerical analysis of concrete-filled double skin tubular slender columns with internal circular and external hexagonal tubes
title_fullStr	Numerical analysis of concrete-filled double skin tubular slender columns with internal circular and external hexagonal tubes
title_full_unstemmed	Numerical analysis of concrete-filled double skin tubular slender columns with internal circular and external hexagonal tubes
title_sort	numerical analysis of concrete-filled double skin tubular slender columns with internal circular and external hexagonal tubes
publisher	Iranian Society of Structrual Engineering (ISSE)
publishDate	2021
url	https://doaj.org/article/c9bcaf8bbe5c4a01a1c2ff6857d38b48
work_keys_str_mv	AT mortezanaghipour numericalanalysisofconcretefilleddoubleskintubularslendercolumnswithinternalcircularandexternalhexagonaltubes AT smaedehmahdavis numericalanalysisofconcretefilleddoubleskintubularslendercolumnswithinternalcircularandexternalhexagonaltubes AT salehmebrahimzadeh numericalanalysisofconcretefilleddoubleskintubularslendercolumnswithinternalcircularandexternalhexagonaltubes
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Numerical analysis of concrete-filled double skin tubular slender columns with internal circular and external hexagonal tubes

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